18379297 has 2 divisors, whose sum is σ = 18379298. Its totient is φ = 18379296.

The previous prime is 18379279. The next prime is 18379307. The reversal of 18379297 is 79297381.

It is a happy number.

Together with previous prime (18379279) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15610401 + 2768896 = 3951^2 + 1664^2 .

It is a cyclic number.

It is not a de Polignac number, because 18379297 - 2¹⁵ = 18346529 is a prime.

It is not a weakly prime, because it can be changed into another prime (18379237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9189648 + 9189649.

It is an arithmetic number, because the mean of its divisors is an integer number (9189649).

Almost surely, 2^18379297 is an apocalyptic number.

It is an amenable number.

18379297 is a deficient number, since it is larger than the sum of its proper divisors (1).

18379297 is an equidigital number, since it uses as much as digits as its factorization.

18379297 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 190512, while the sum is 46.

The square root of 18379297 is about 4287.1082328301. The cubic root of 18379297 is about 263.9021723930.

The spelling of 18379297 in words is "eighteen million, three hundred seventy-nine thousand, two hundred ninety-seven".